Since I'm not online and IMing my friendslist 24/7, Twitter (and especially the blog-echoing functionality of LoudTwitter) is something that holds no appeal for me. As a result, I don't get much enjoyment out of reading one-sided, completely context-free conversational snippets, especially when lengthy--I find it more annoying than trying to figure out what's being discussed when listening to someone else talk on the phone. However, the folks posting them obviously do get something out of it or they wouldn't do it, so I'm not about to selfishly ask them to remove part of their blogs' content just because it doesn't appeal to me. So when I heard about the LJ Twitterless Greasemonkey script for Firefox, I had to see for myself.
Sure enough, after a little tweaking to make it work with the Generator friendslist layout (which involved following the instructions in the script, then changing "ul" to "p", and adding "*.livejournal.com/friends*" to the list of affected pages so that it'd also work on "previous" pages), LoudTwitter posts on my friendlist now vanish, leaving just a placeholder of the subject line, date/time, and the links to the full post & the post-a-comment screen--so that I can still go in and read those posts if I choose to do so, but it's a lot easier than it was before to simply skip right past them.
After NoScript, Adblock, and Web Developer, I think Greasemonkey is quickly becoming one of my favorite Firefox extensions.